FRE-600: Fix code review blockers

- Consolidated duplicate UndoManagers to single instance
- Fixed connection promise to only resolve on 'connected' status
- Fixed WebSocketProvider import (WebsocketProvider)
- Added proper doc.destroy() cleanup
- Renamed isPresenceInitialized property to avoid conflict

Co-Authored-By: Paperclip <noreply@paperclip.ing>

node_modules/viem/errors/unit.ts

@@ -0,0 +1,12 @@
+import { BaseError } from './base.js'
+
+export type InvalidDecimalNumberErrorType = InvalidDecimalNumberError & {
+  name: 'InvalidDecimalNumberError'
+}
+export class InvalidDecimalNumberError extends BaseError {
+  constructor({ value }: { value: string }) {
+    super(`Number \`${value}\` is not a valid decimal number.`, {
+      name: 'InvalidDecimalNumberError',
+    })
+  }
+}